DEVICE AND METHOD FOR REUSING SPACE BROADCASTING FREQUENCY BAND FOR GROUND-BASED BROADCASTING SIGNALS Russian patent published in 2003 - IPC

FIELD: space broadcasting engineering. SUBSTANCE: satellite antenna receives signals from satellite at first frequency. Satellite signals arrive over satellite signal direction within viewing angle relative to antenna axis. Ground-based transmitter sends signals at first frequency over transmitting direction from transmitter to user location. Ground-based transmitter is so disposed relative to user location that transmitting direction is at relatively large angle to first antenna axis. Transmitting direction angle to satellite antenna axis is sufficiently large to allow for ground signals at location to form ground input signals from antenna lower than interference level relative to satellite input signals formed by antenna. EFFECT: preventing interference of ground signals with space ones though they are transmitted at same frequency. 44 cl, 4 dwg